My convertible was taken in for a 2 hour windshield replacement and three hours later I was called with a "problem". They had lowered the roof (I had not been notified that this would be necessary) and it was stuck half way open. I drove over immediately to see if they knew what they were doing and the windshield was further cracked. Audi dealership had to send a mechanic over as the car could not be driven. The top was manually lowered and taken to the audi dealership for repair where there was a $650.00 charge. The dunces at Crystal glass had attempted to lower the roof without the car running and had shorted the sensors. They denied any responsibility. They didn't take care to read the manual and presumed they knew what they were doing. $1000.00 dollars and 5 days later I have my new windshield (from another glass repair business where I lowered the roof myself and waited for it to be done so that they didn't "touch" the roof.) Beware of convertible tops and Crystal Gglass West!!